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Top Ten Viruses Reported To Sophos In August 2003

  • 02 September, 2003 15:20

<p>Sobig-F wins the 'war of the worms'</p>
<p>This is the latest in a series of monthly charts counting down the ten most frequently reported viruses and hoaxes as compiled by Sophos, a global leader in anti-virus protection for businesses.</p>
<p>For August 2003, the chart is as follows, with the most frequently occurring virus at number one:</p>
<p>1. W32/Sobig-F (Sobig variant) 37.6% New Entry</p>
<p>2. W32/Blaster-A (Blaster worm) 18.8% New Entry</p>
<p>3. W32/Nachi-A (Nachi worm) 5.5% New Entry</p>
<p>4. W32/Mimail-A (Mimail worm) 5.3% New Entry</p>
<p>5. W32/Yaha-P (Yaha variant) 2.1%</p>
<p>6. W32/Klez-H (Klez variant) 1.3% 19 months in chart</p>
<p>7. W32/Bugbear-B (Bugbear variant) 1.1%</p>
<p>8. W32/Yaha-E (Yaha variant) 0.8%</p>
<p>9. W32/Dumaru-A (Dumaru virus) 0.6% New Entry</p>
<p>10. W32/Sobig-A (Sobig worm) 0.3%</p>
<p>Others: 26.6%</p>
<p>"August 2003 will be remembered as one of the worst months in the history of computer security. A series of different viruses have bombarded computer systems around the globe, culminating in the newest member of the Sobig family which swamped internet email traffic and took the pole position in the chart. The top four viruses are all new entries – any of which would have been number one in a normal month," said Graham Cluley, senior technology consultant at Sophos Anti-Virus. "The Sobig-F worm clogged up inboxes and crippled networks with the sheer volume of email traffic it produced. Users and companies should remain on guard and put systems in place to protect against future attacks."</p>
<p>Sophos analysed and protected against 778 new viruses in August. The total number it now protects against is 84,277.</p>
<p>The top ten hoaxes reported to Sophos during August 2003 are as follows:</p>
<p>1. Hotmail Hoax 16.3%</p>
<p>2. JDBGMGR 12.2%</p>
<p>3. Bill Gates Fortune 10.8%</p>
<p>4. WTC Survivor 7.9%</p>
<p>5. Meninas da Playboy 7.4%</p>
<p>6. Bonsai Kitten 4.7%</p>
<p>7. Budweiser frogs screensaver 3.8%</p>
<p>8. A virtual card for you 3.2%</p>
<p>9. Frog in a blender/Fish in a bowl 3.1%</p>
<p>10. Bill Gates 1.3%</p>
<p>Others: 29.3%</p>
<p>Sophos has made available a free, constantly updated information feed for intranets and websites which means users can always find out about the latest viruses and hoaxes:</p>
<p>Graphics of the above Top Ten virus chart are available at</p>
<p>For more information about safe computing, including anti-hoax policies, please visit:</p>
<p>About Sophos:
Sophos is the largest specialist developer of anti-virus software and protects more than 20 million computer users against virus attacks, worldwide. Sophos is headquartered in the UK and offers its products through a global network of subsidiaries and certified partners in more than 150 countries. Sophos products, backed by award-winning 24-hour customer support, are deployed by all types of organisations, including small- to medium-sized businesses, large corporations, banks, governments and educational institutions.</p>
<p>Sophos’s regional head office for Australia and New Zealand is in Sydney and hosts one of the company’s three Computer Virus Research and Development Laboratories to provide global support services.</p>
Paul Ducklin ( is available for comment:
+61 407 320 515 (mobile)
+61 2 9409 9100 (tel)
+61 2 9409 9191 (fax)</p>
<p>Sophos's press contact at Gotley Nix Evans is:
Michael Henderson (
+61 2 9957 5555 (tel)
+61 413 054 738 (mobile)
+61 2 9957 5575 (fax)</p>

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